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Paper Abstract and Keywords
Presentation 2008-06-20 08:50
FDTD analysis of medical device interference due to near field generated around HF RFID reader/writers -- Experimental validation based on EMI characteristics of actual devices --
Norihiro Toyama, Shunichi Futatsumori, Takashi Hikage, Toshio Nojima (Hokkaido Univ), Ben Koike (JAISA), Hiroshi Fujimoto, Takeshi Toyoshima (Medtronic Japan Co., Ltd.) EMCJ2008-7
Abstract (in Japanese) (See Japanese page) 
(in English) Electromagnetic interference (EMI) from Radio Frequency Identification (RFID) reader/writers on implantable medical devices is investigated. The purpose of our research is to study a numerical EMI estimation method. First, four high frequency (HF) RFID reader/writer antennas and numerical antenna models are constructed. In addition, obtained data of magnetic field distributions created around the antenna by using the finite-difference time-domain (FDTD) method and experimentally measured data are comparatively discussed. Next, EMI experiments are performed to obtain the maximum interference distance (distance where EMI disappears) with respect to antenna input power. Then, to validate the analysis results, the relation between the maximum interference distance (obtained by EMI experiments with an injected ECG signal) and the estimated induced voltage at the connector of the implantable cardiac pacemaker model are investigated. A numerical model of a human torso phantom and an implantable cardiac pacemaker are analyzed in order to estimate this voltage.
Keyword (in Japanese) (See Japanese page) 
(in English) Radio Frequency Identification (RFID) / electromagnetic interference (EMI) / pacemaker / FDTD method / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 97, EMCJ2008-7, pp. 1-6, June 2008.
Paper # EMCJ2008-7 
Date of Issue 2008-06-13 (EMCJ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee EMCJ  
Conference Date 2008-06-20 - 2008-06-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2008-06-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) FDTD analysis of medical device interference due to near field generated around HF RFID reader/writers 
Sub Title (in English) Experimental validation based on EMI characteristics of actual devices 
Keyword(1) Radio Frequency Identification (RFID)  
Keyword(2) electromagnetic interference (EMI)  
Keyword(3) pacemaker  
Keyword(4) FDTD method  
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1st Author's Name Norihiro Toyama  
1st Author's Affiliation Hokkaido University (Hokkaido Univ)
2nd Author's Name Shunichi Futatsumori  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ)
3rd Author's Name Takashi Hikage  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ)
4th Author's Name Toshio Nojima  
4th Author's Affiliation Hokkaido University (Hokkaido Univ)
5th Author's Name Ben Koike  
5th Author's Affiliation Japan Automatic Identification Systems Association (JAISA)
6th Author's Name Hiroshi Fujimoto  
6th Author's Affiliation Medtronic Japan Co., Ltd. (Medtronic Japan Co., Ltd.)
7th Author's Name Takeshi Toyoshima  
7th Author's Affiliation Medtronic Japan Co., Ltd. (Medtronic Japan Co., Ltd.)
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Speaker Author-1 
Date Time 2008-06-20 08:50:00 
Presentation Time 25 minutes 
Registration for EMCJ 
Paper # EMCJ2008-7 
Volume (vol) vol.108 
Number (no) no.97 
Page pp.1-6 
#Pages
Date of Issue 2008-06-13 (EMCJ) 


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